JDK 23

This release is the Reference Implementation of version 23of the Java SE Platform, as specified byJSR 398 in the Java Community Process.

JDK 23 reachedGeneralAvailability on 17 September 2024. Production-readybinaries under the GPL areavailable from Oracle; binaries fromother vendors will follow shortly.

The features and schedule of this release were proposed andtracked via theJEP Process, as amended by theJEP 2.0proposal. The release was produced using theJDK Release Process (JEP 3).

Features

455:	Primitive Types in Patterns, instanceof,and switch (Preview)
466:	Class-File API (Second Preview)
467:	Markdown Documentation Comments
469:	Vector API (Eighth Incubator)
473:	Stream Gatherers (Second Preview)
471:	Deprecate the Memory-Access Methods insun.misc.Unsafe for Removal
474:	ZGC: Generational Mode by Default
476:	Module Import Declarations(Preview)
477:	Implicitly Declared Classes and InstanceMain Methods (Third Preview)
480:	Structured Concurrency (ThirdPreview)
481:	Scoped Values (Third Preview)
482:	Flexible Constructor Bodies (SecondPreview)

Schedule

2024/06/06		Rampdown Phase One(branch from main line)
2024/07/18		Rampdown PhaseTwo
2024/08/08		Initial ReleaseCandidate
2024/08/22		Final ReleaseCandidate
2024/09/17		General Availability